package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {
    @PostMapping("/file")
    public Result uploadFile(MultipartFile file){
        try {
            //判断文件是否存在
            if (file == null){
                throw new RuntimeException("文件不存在");
            }
            //获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }
            //获取文件的扩展名
            String substring = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //获取文件内容
            byte[] bytes = file.getBytes();
            //创建文件上传的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,bytes,substring);
            //给予工具类进行上传文件,并接收返回的参数
            String[] upload = FastDFSClient.upload(fastDFSFile);
            //封装返回的结果
            String url = FastDFSClient.getTrackerUrl() + upload[0] + "/" + upload[1];
            //接收结果返回
            return new Result(true, StatusCode.OK,"文件上传成功",url);
        }catch (Exception e){
            e.printStackTrace();
        }
        return new Result(false,StatusCode.ERROR,"文件上传失败,请稍后再试");
    }
}
